Motor production line and a control method thereof

At least a motor production line 1 for producing a stator. Subjected to multiple press working while feeding the elongated steel plates, having a press device 10 for forming a stator core 80 and a stator assembly 4 for assembling a stator. Between the stator assembling device 4 and the press apparatus 10, the stator core transfer device 22 for transportable a stator core 80 formed sequentially directly to the stator assembling device 4 in the press device 10 is disposed. A rotor assembling apparatus 3 for assembling a rotor, it is preferable to further disposed a rotor core transfer device 21 capable of transferring the rotor core 70 formed successively directly to the rotor assembly apparatus 3 in the press apparatus 10.